If you upgrade pre 5pm your card should be dispatched for a next day delivery (1st class post)
You will have a £200 fee-free withdrawal buffer, anything over this is charged at 3%.
Card transactions online and at a terminal are free and at the MasterCard conversion rate.
Note that the 3% fee for overseas ATM withdrawals over £200 applies to the prepaid card, too. The current account behaves exactly the same as the prepaid for overseas cash and card use.
So, just to be clear, cards that are being issued now will be current account cards, not pre-paid?
Yes. And if you have a prepaid card it will stop working in April.
So if you loose your pre paid card you have to upgrade to get a replacement?
if you lose your prepaid you don’t have to upgrade to a CA - you can close your account and your remaining balance gets returned to you , just like any other bank if you choose not to use their services 
Not necessarily. They might have a stock of replacement prepaid cards, but they’re certainly not opening new prepaid accounts, and haven’t been since sometime around November last year.
Upgraded yesterday, card arrived today … amazed at the speed. Yes you can still top up via a debt card but the bank transfer is so easy … yes, I am fairly new to online banking for transfers etc. But it is just as easy as a card top up … really … Andy
30 days and counting 
Can I use the Monzo card in my Apple Wallet? And you going to be offering Apple Pay?
Not at the moment, but I imagine it is coming soon. Monzo lists what it’s currently working on and “Mobile NFC Payments” is listed in the near term. I’ve linked the roadmap so you can take a look.
Ahh ok so it’s either close or upgrade, you won’t get sent a new prepaid card.
nope you won’t be issued with a new prepaid card , it will be a new Current account card - which will work in exactly the same way with additional benefits - and apparently you need to upgrade within the next 7 days 
Cool thanks, I’ve been upgraded since last year but was interested to see if they were pushing users that way.
Interesting they are saying order within the next 7 days as there will still be 2 weeks until closure. Maybe they are expecting a massive amount of upgrade thus adding to the delay of getting the cards out.
I understand that once the 4th arrives any prepaid card will stop working and any balance will be refunded to the top up card. The user will still be given the option to upgrade but as far as monzo are concerned their account has been closed.
yes from the original blog post posted at the top of this thread -
What does this mean?
On 4th April 2018, if you haven’t upgraded your account you will no longer be able to use your prepaid Mastercard® or your Monzo app to make or receive payments.
Your app will continue to work for a short time after this date, so you can still access your account history and upgrade if you want.
If you don’t decide to upgrade, we’ll refund any remaining money by returning it to your original bank cards, or transferring it to one of your bank accounts.
If neither of those are possible, we’ll get in touch to find out the best way to get your money back to you. You can rest assured that any remaining money will be returned.
If you like, you can also withdraw your remaining balance from an ATM anytime before the 4th April 2018.
slightly confusing is the "Your app will continue to work for a short time after this date"
I can confirm that the 1p balance on a prepaid account I didn’t upgrade has appeared in one of my legacy accounts with ref “MONZO”.
So that’s the end of all that then. Onwards and upwards.
Firstly sorry for bringing this thread back to life, but I needed to leave the BETA programme and it was not happening, yes it is December 2024!
For anyone that has the same issue, I hope this helps.
Having been through support and been asked to remove the app for the first time ever (iirc) before reinstalling it:
Android/Play Store said I was in the beta programme but after removing and several restarts of the device and even a new device going to App Store in the hope of reinstalling the Monzo app … subsequent times I can’t install as there is no option to, it simply says:
Removing your account from the beta test program. You may want to uninstall the beta test version and install the public version.
That is what I was trying to do, in fact install ANY version as I cannot get anything done on the web interface in terms of pots, payments, transfers, cards, etc.
I did some more reading and finding old links, none helped until I found the link I used to join.
According to that, it says that leaving the beta can take HOURS. And after trying and waiting over 6, I didn’t know if it was actually going to.
Here’s what worked for me:
Rejoin the BETA - this happened very quickly, within seconds.
Once in the BETA I was able to reinstall the BETA app.
I could have left it there but it seemed a good time to resolve it properly.
The sequence of the following two steps seems to be what makes the difference.
With the BETA still installed:
At the magic URL, request to LEAVE the BETA.
This happened quite quickly.
Uninstall the BETA version of the app.
Restart the device - seems to be a good idea
Install the main APP.
Here’s the URL that helped:
https://play.google.com/apps/testing/uk.co.getmondo
Merry Christmas! 
@bea Not sure if you could communicate this to the support team as they seemed unaware.
Wait you have a prepaid card still? I’m confused.
I think they mean TestFlight or whatever the google play test thing is called. It’s got to be that surely.