Just how many re-releases are there? Many Psikyo classics were released on mobile like more than once with later releases being based on the Zerodiv ports. The same can go for Taito's Rayforce on modern consoles and Deathsmiles on PC with the City Connection port being part of the compilation with DLC characters for the first game. Even the original Darius is guilty of the same thing, one that is Arcade Archives version and the other being part of the compilation made by M2. A regular audacity ever since the past times is how overpriced Taito games are.
City Connection has plans for modern console releases of several Taito arcade classics although Puzzle Bobble 2 was already in Arcade Archives under ACA Neo Geo but that was a little bit graphically inferior to the other arcade version of the same game whose hardware is 32-Bit. A cool thing about the S-Tribute release of Rayforce is that you can set the in-game screen orientation without setting the external UI to be in the same screen orientation as the in-game. Since the game is based on the Saturn version, you get superior soundtrack although the graphics are inaccurate in horizontal screen mode and the S-Tribute version doesn't fix the flaws the Saturn version has. The real concerns are the input-lag and screen shimmering and City Connection was aware of the input-lag issue.
What can the upcoming M2 version do besides the fact that all the games in the upcoming compilation game, Ray'z Arcade Chronology are based on the arcade versions? Will there be a consumer mode for the all games that have different game modes? G-Darius HD had Ver. 2 and Consumer Mode you can choose from in addition to the initial arcade version. Like G-Darius HD, Raystorm and Raycrisis will have a similar treatment from M2, so other than the games being basically upscaled, the rest of the graphics are the same. The mobile version of Raystorm is said to have Hi-Res HUD and rearranged Stage 1 BGM as the exclusive additions but it's a shame that the upcoming compilation game will not have that Hi-Res HUD for Raystorm Neo HD.
One exclusive bonus is that you'll be able to try out the prototype, R-Gear, which has only one stage. Suffice to say, it's something as experimental as G-Darius Exhibition from G-Darius HD Steam version, the deepest part of the compilation.
As for the choice of modern console ports of Taito's arcade classics, you can choose to go for either the City Connection port or the M2 port of Rayforce. It's unexpected for the upcoming compilation game, Ray'z Arcade Chronology to be the next project from M2 and it's going to be released in March next year. Only time will tell what else will they work on in the future.