Both OP and BB are up on TFSource for all of that coin burning a hole in your pocket
They've also got the Deluxe Pink Bumblebee/Laserbeak repaint for a measly $59.99!
Nomnomnomnomnomnomnomnomnomnomnom!
Theres pre order up now on robotkingdom
http://www.robotkingdom.com/c0893h000.html
This guy does a great review and comparison with the original rotf mould with the new mpm-4.
https://www.youtube.com/watch?v=5UjhTHfE3UA
From the looks of it the japanese version will be like the TLK mainline ie exactly the same but with stickers on the box.
...the only change I'd want other than more paint is proper clamshell packaging, the current one both mpm03 and 04 use is rubbish, but I doubt we'll get that
^looks like Takara will just use the same box for these based on the info on TTmall's listing for MPM03 Bumblebee (W230×H153×D64mm). They will just probably slap some stickers with Japanese texts. Just not sure why Takara has not announced/listed Optimus yet