The Phantasy Star Online series will have its 15th anniversary at 2015.
2015 is also the 24th anniversary of the Shining series,
the Sonic the Hedgehog series, and the Puyo Puyo series.
The Puyo Puyo series probably could be doing a big celebration at its 24th anniversary,
instead of the usual 25th anniversary (1/4 century) that is usually done by other series.
In theme with its word play on the number 24 (Puyo).
So maybe something big is currently being prepared for 2015~2016?
The 'ARKS' team (Phantasy Star / Shining / Sonic / Puyo Puyo / 7th Dragon / etc...)
certainly have been doing a lot of collaborations between these projects in the last several years.
For the Sonic part, it will be officially announced in 2014.
Since that both SEGA of America and SEGA of Japan
usually officially announce the next direction of the Sonic series in a 5 years term.
Here are some examples of the previous plans:
1989 = The start of the development on 1991's Sonic the Hedgehog.
1994 = The start of the development on Sonic R_PG_ (the early version of 1998's Sonic Adventure)
1999 = Sonic Team USA were tasked as the sole developers of big Sonic games.
2004 = The conversion of previous still in development Sonic projects into 2006's Sonic the Hedgehog.
2009 = The start of the development on multiple Sonic projects for Sonic's 20th anniversary.
Not all plans went smoothly though. Here are some examples.
A U.S.A. first release for Sonic games is not really that beneficial.
Ironically, it is actually more detrimental toward SEGA of America, especially these days.
This was later on revised (temporary) in 1999. Developed in the U.S.A. but released first in Japan.
Sonic RPG's release was delayed. It was later on converted from a SEGA Saturn game
into a SEGA Dreamcast game, and then it was released in 1998 as 1998's Sonic Adventure.
Sonic Team USA were not powerful enough to become the sole developers of big Sonic games.
In 2004, they were planned to be upgraded with 2006's Sonic the Hedgehog as its flagship product.
In 2004 also, Sonic Team USA was rebranded as Sega Studio USA.
In 2005, the 2006's Sonic the Hedgehog project was abandoned. It was later on replaced with
2007's Sonic and theSecret Rings and 2008/9's Sonic World Adventure / Sonic Unleashed.
Sega Studio USA were only slightly upgraded to become a Nintendo's Wii game developer studio,
they did not become a full Sony PlayStation 3 / MicrosoftXBOX 360 game developer studio.
This caused a lot of strains when they converted 2011's Sonic Generations into a HD version.
There were supposed to be multiple Sonic games in 2011. However the events after March 2011
caused 2011's Sonic Generations to be main Sonic game for 2011.
Lots of other Sonic projects were later on reworked into future games (2013?).
Anyway. Assuming that it takes another 2 years to developed another 7th Dragon game.
2015 will also be the next timeframe when the next 7th Dragon game showed up.
2009 (Nintendo DS)->2011 (Sony PlayStation Portable)->2013 (Sony PlayStation Portable)->2015 (?).
phantasy star online 2 is Sonic great product .