We still have our old Dev->QA->Prod system based on NW7.0 and CRM5.0 and separately from that we're building a whole new Dev->QA->Prod based on NW7.4 and CRM7EhP3 and that'll be mine for the next couple of months until I've integrated all of our old developments in to the new system. Then we'll go live with that and I'll keep the old setup for a year as reference.
I've had a sandbox to play with for a few weeks now and I see that integrating our old dev's is going fairly smoothly. SAP introduced XSRF tokens, so I'm adding a few lines of code to my JSP's to manage that and mostly things are going OK. They've changed how messages work (headErrMsg.inc.jsp) I'd inserted that to contractread.jsp years ago to display messages on contracts; so I had a bit of work to do to get that working again.
Like I said, it's mostly going well so far.
The bad news... I see they've made massive changes to the catalog/search and how all of that works. We've very heavily modified the catalog search and display and I think that I'm going to have a lot of work to do there.
Thanks Andreas,
Patrick.