A couple questions regarding Men of War (Please help)

[Jikki]

Hi, I played Men of War (steam version) before but forgot about it, and was thinking of getting back into it - I just love realistic games such as Il-2, Red Orchestra, Falcon 4.0 (stilll learning.) However, as I was browsing some forum pages, I stumbled across some questions:

1. Is the Steam version still "out of date?" Do I have to manually patch it after I download from Steam?

2. I noticed a stand-alone expansion "Red Tide" being out. And another two Men of War games in the works. Are the two games that are in development just "expansions," or true sequels? Reason why I'm asking is because I would like to buy the true sequel(if it's being developed) rather than expansions to the game such as Red Tide.

3. Is Red Tide worth it in your opinion?

Thanks a lot guys!