I do not agree.
Maybe it is not as easy as before to put is all in one release, but....
WhatsApp can still let us use the old version (as it worked yesterday)
It is their dessicion to let us all fail in the verification mode and thus stopping our use of WhatsApp all of a sudden.
(if they can detect that the version is old and not send a code, they can also send a message with a warning: this is an old version, not supported anymore and add the 3 number code!)
They can put the old version in the iTunes store as WhatsApp-3G or so.
If the App could communicatie yesterday, why shouldn't it be possible tomorrow?
They cashed millions for all the 3G users in the past.
They can easily let us use the old version on a 'as is' basis.
(ok, if we are missing some fancy new options, text and a picture should stay possible?)