I just found out the 4th book in the beast arises, a series about a massive ork invasion of the imperium, will feature eldar. Eldar attacking the Terran palace that is. I'm just letting you know now so you don't get to excited. You will most likely be written as a xeno character/race with no depth or development. Book releases in april and will have ~225 pages if it follows the current series trend. This will also follow 4+ seperate storylines. So again don't expect too much.
Presumably in this one the plucky Space Marines outwit the arrogant Eldar, utilise their Webway to stop an Ork invasion, then whitewash the hints of any taint of Chaos from another founding Legion?
Wait for the price to drop or collections to come out. Also if you wanna see some asassinarium and high lords of terra action, but no if you wanna see ork, mechanicus, SM, or anyone else really.
You forgot to include "not winning" said contest. You're doing some middle school writing a disservice otherwise.
Forgive me for saying so, but that's unworthy of you. Black Library releases are flawed at the best of times, but there are still more than a few extremely well written works among them.