Perl Catalyst version 5.90079_006 'Holland' has been on CPAN for a few days and appears to be stable. In addition I've been checking around and it seems most of the common views and Plugins are ok or have been updated to be good with the new changes. As a result I am planning to release stable shortly. If you are testing this development release, or have a plan to do so shortly and would like a bit more time, please shout out.
This version of Catalyst contains big fixups to UTF8 encoding, and also includes changing the default encoding to UTF8. I think in 2015 this is expected in a modern framework. Also I have found that without a definative statement on the subject from core, various extensions have tended to go their own way in solving some of these tricky encoding issues. So having this change in core is hopefully going to make it easier to keep everyone on the same page. It does qualify as a big change, which is why I will say for the last time:
"Please test this and send me your bug reports"!
I'm going to be very discouraged if I get them the week AFTER we take this code to stable. So complain now or either wait til I have time later to fix your bugs (or you can pay me to fix your bugs).