The short answer is: yes! When you're selecting add-ons for your pre-order on Backerkit.com, select the "Extra copy of Hero-U for a friend" option. That will entitle you to an additional digital copy of Hero-U at a $15 discount from the regular price.
If you're interested in collectables, you may also want to take a look at the plush Meep doll for $35. I think there were only 1,500-2,000 of these made. More might be made to promote future sequels to Hero-U but I personally hope that those might be a different color to keep each run unique.
There is no set date for release. The Coles expect the game to enter the beta testing phase late April with a possible launch in June or July. You can read more details here: https://www.kickstarter.com/projects/transolargames/hero-u-rogue-to-redemption/posts/1807590
It's quite possible that these dates could be pushed back, though, as is the nature of game development.