We're sorry that you weren't happy with your last codex. As compensation, we're going to give you some awesome new models. You've already seen the Maleceptor and the Toxicrene, but we don't feel that those are enough. Remember the missing Mycetic spore that had you so upset? Well, please accept our apology in the form of the Tyrannocyte; a combination drop pod and gunship. Oh, and we might have thrown in a couple more things, too.
Or at least that's what I imagine GW is saying with the wave of new Tyranid models. Not a day after I suggested that GW might eventually give Tyranid players a Mycetic spore, we get leaked White Dwarf images of a replacement unit called the Tyrannocyte (source here). It has the same transport capacity as the old Mycetic spore and it won't mishap by drifting onto impassible terrain or another model. However, the Tyrannocyte also comes with five deathspitters (which can be upgraded to barbed stranglers or venom cannons) and it can move after the unit inside has disembarked.
The Tyrannocyte model can also be built as a Sporocyst (source here). This thing, which has the same armament as the Tyrannocyte, is an immobile pod with the Infiltrate special rule. Once per turn it can produce a Spore Mine Cluster or, once per battle, it can produce a single Mucolid Spore instead (this is essentially a giant spore mine).
To top it all off, the White Dwarf that introduces these new models says that the following week will bring "Psychic Horror". While writing my previous blog post, I noticed that the Venomthrope was missing from GW's web store. Now I've noticed that the Zoanthrope is missing, too. I'm going to go out on a limb and guess that they'll be releasing a joint Zoanthrope/Venomthrope kit in the next couple weeks.
It must be an exciting time to be a Tyranid player.