Poor TKs! I got an army too but i don't play them often. I was very hyped by the new models and stuff when they came up. Ended up building a Khalida 300pts list with truckloads of archers (50+20) and some other funny circus units to circle them (sphinx, some chariots, 3+3 petrifyng sand snakes, catapults, arc an stuff), but in the end it gets shelved most of the time in favour of other armies...
If some new models are to come out i guess it's a double kit for Necrolith Colossus + Titan. It's the only thing missing (as far as big kits goes, i would be really be pissed if it's just a char like Arkhan or something like that)... I would be pleased tbh. I wouldn't mind a pair of Necroliths to put in a hand to hand list with a deathstar of tomb guards and some necropolis dead snake riders...