Don't have a clue about version 6.2, but 6.1x barely came out what a month or 2 ago. So I wouldn't expect to see it real soon. Who knows though.

The _day_of_5 things as far as I can tell are related to the /inc/classes/bxdolarticles.php, bxdolclassifieds.php, bxdolblogs.php, bxdolevents.php changes that were made from 6.1.1.

I don't know that it's a fix, but using the files above from 6.1.1 with 6.1.2 seems to resolve the date issue, but in the process of doing this I don't know if it has see more any impact on anything else. It seems to be fine, but will require more testing to know for sure.