In a recent Q&A that Rockstar games did, they revealed that the development process for GTA is going “well” despite it being a very large project. Along with this they released two brand-new screens.
[quote]We are very busy working on the game! Everything is going well, but the game is a huge project. We should have more information and some new assets for you soon.[/quote]
They also confirmed that any “beta’ that are out there are fake and that the game will not have a public beta for either single or multiplayer.