what games sequels you wish to be released, but unfortunately they weren't announced at E3?

personally i will like to see:

battlefield bad company 3 (theres a rumor for battlefield 2143 instead)
blood omen 3 (they've canceled dark sun and dark prophecy makes me so sad... i mean c'mon 2 games in a row cancelled?)
darksiders 3 (the story needs an ending badly hope nordic doesnt screw up)
mafia 3 (registered domain so should be announced soon)
manhunt 3 - this will have a hard time passing the rating again like manhunt 2
payday 3 (they released goty and add more dlcs to the second one, pls move on overkill)
prototype 3 (infamous got a sequel, this its much better in my opinion - so mad at activision decision layoffs)
star wars force unleashed 3 (lucas arts says its a "possibility")
the godfather 3 - EA currently doesnt have any plans for it
zeno clash 3 (they have no plans for it at the moment but the story from 2 was letting you want more)

seems like number 3 is for the charm on these franchises ;)

honorable mentions:

star wars 1313 - status currently on hold :(

EDIT: added some games from comments which i also want to see in the future

aliens vs predator 3
bloodrayne 3
condemned 3
darkness 3
no one lives forever 3
postal 3
project igi 3
star wars kotor 3
star wars jedi knight 3
system shock 3
torchlight 3

Take-Two registered a few days ago a number of domains related to Mafia 3 so I guess that's confirmed.

since shenmue 3 is actually happening now
id like to see an actual kotor 3 that picks up from 2 and is developed by obsidian

and bloodrayne 3

bloodrayne 3 can you provide a link to the source if there is a rumor about it?

Top Wants
Zoo Tycoon 3 (PC) (I SO want to see a PC sequel to this, screw Xbox)
Evil Genius 2 (Ow god, make it happen)

Lesser Wants
Orcs Must Die! 3 (with singleplayer/coop focus, not that Unchained Multiplayer thing they're making)
Omerta City of Gangsters 2 (Or any other Gangster sim, but done right, Omerta was ok-ish but missed the mark in ton of places)

No doubt there's other things but this is off the top of my head.

C&C Generals 2.

Warcraft 4.

Emperor: Battle for Dune 2.

Star Trek Armada 3.

Neither of them has a high chance of appearing but I still have a small hope :)

there is no rumor
i just like to see an actual bloodrayne 3

Alpha Protocol
Clive Barker's Undying
Evil Genius
Saced
Sacrifice

What I want is core mechanics and atmosphere to still be there but whatever issues, gameplay or technical, should be fixed but ultimately even modernization should be kept to a minimum or a modesty especially for Sacrifice and Undying.

Well, I would like to see a sequel to the game "Darkstar One", but I fear that will never happen. :-((

I’d love to see these sequels:

Diablo 3
Dungeon Siege 3
Sacred 3

You know what I mean? And also:

Advent Rising 2
Arx Fatalis 2
Dark Messiah of M. a. M. 2
Enclave 2
Icewind Dale 3
Jedi Knight 3
Lands of Lore 4
Legacy of Kain: Whatever (but no F2P arena shooter)
Torchlight 3
Turok ? (like the first two)
Unreal 3 (like the first one, not the second)

-Beyond Good & Evil 2.
Seriously Ubi, stop milking your franchises until they bleed dry and make this darn game already.

-Knights of the Old Republic 3. I'd really like Obsidian to somehow work on this, but I'll be content even with Bioware.

-Half-Life 2 ep. 3, or Half-Life 3. Even though I'm not really a fan of the series I just want to see how the story ends.

If we're dreaming here:

NOLF 3, along with a re-release of 1 & 2.

Alpha Protocol 2

Too Human 2

Sacred 3 proper

Nocturne 2 (or a remastered 1)

Darksiders 3.

Ever heard of Unbended, formerly known as Unsacred? They want to make a game in the tradition of Sacred, but they don`t have the rights for the name, the owner of the rights even forbid them to call the game Unsacred.

Red Dead Redemption 2
Grand Prix Legends '66