User blog comment:Allenallenallen333/Unity 4.5 Is Now Live!/@comment-96.254.7.168-20140530002637/@comment-3499785-20140530130229

Hopefully next month. They completely skipped 4.4 for 4.5, lol.

4.3.4 --> 4.5 --> 4.6???

Either that or they'll be a jerk and do 4.5.1 to 4.5.9, then 4.6.