OK guys today was the last day on my job.
QA have encountered regressions with wheel support. The code which handles wheel input had many hard-coded constants, so I couldn't fix all the problems. Now wheel users will also have to use the configuration tool. Wheels will work correctly only with Scheme 1 and Scheme 2.
Finally, we decided to make the patch live, however there was no possibility to upload it today (a contact with Valve is needed for this). I hope the patch will be uploaded next week.