A couple of comments re: performance. First, Ext JS 4.1 fixed a lot of the layout performance issues that existed in 4.x. The layouts are drastically faster compared to 4.0. In some cases they will be slower than 3.x and in other cases faster.
Please specify and quantify these statements re: the many very specific use cases that have been posted repeatedly in these forums. We need to see direct comparisons of the latest v4 vs v3.4.1 for specific scenarios to believe that considering the upgrade path makes business sense. These *must* include performance on IE.
I've asked for Sencha quantification on performance for specific tests many times in these forums and have yet to see any. Would love to be surprised this time. It makes no sense for several developers to individually upgrade the test cases already provided to the latest v4 release only to find out that the performance is still slower than v3.
Originally Posted by hyperionab
I can let you know that we'll start work on it once we wrap up Ext JS 4.2.0 so we can have some of the dev team go back and work on 3.4.2. That's the best answer I can give you right now.
So nobody is currently working on v3 fixes... I appreciate the honest response.