I heard that Masuda's English is not the best, so his secret message could be misinterpreted wrong. I heard about his post on his blog from Smogon, and I heard of Pokemon Ranger 2 from Serebii. Holo Metal looks so cool. It makes sense that they made it, since Maylene does use Lucario which is Fighting / Steel. I wonder what they'll use for Bryon then. :O
Masuda's hint might lead to some possible guesses. (Most are from Smogon and here) Jan. 12 is his Birthday, which suggests something special, like his Favorite Pokemon or something. It is also a day that hasn't been in English copies of Diamond and Pearl yet, so they may have programmed something in the game to occur on Janurary 12. It's a possiblity, but people have claimed nothing happens when they change the DS's internal clock. Going to Lake Valor is interesting. I definately wouldn't have come up with that connection. Most likely, it has something to do over Wi-Fi, but again, there is not enough info. to say whether it's over the GTS, Wi-Fi specifically, etc. Most interesting of all, is that people seem to think it has something to do with Darkrai, Shaymin, etc. I'm not one to speculate, as I'm probably just going to be let down. All we can really do is wait until more details are shown.
Ranger 2 looks cool. There's many starters and it's rumoured to have Wi-Fi capabilities. I actually might try it out, if it's better than the original.
dmaster out.