IGN Japan has asked Konami directly some questions surrounding MGS Delta.
They have confirmed the following.
1) According to KONAMI, director Hideo Kojima and Yoji Shinkawa are not involved in the remake.
2) Regarding whether or not there will be further remakes of the series, he received a positive answer, saying, “We will consider it while listening to the voices of our customers.”
3) Regarding the development of the remake version, it seems that the development team of KONAMI is at the center, and as rumored, the Singapore studio Virtuos is also cooperating.
Source: IGN Japan
IGN Japan interview with Konami reveals new MGS Delta details