Is it possible to root on 5.1.1

T-Mobile just pushed out the 5.1.1 update this morning and I hopped on it instantly. I was just wondering is it possible to root my phone in its current state (23.4.A.0.580) or do I have to downgrade and then upgrade again? This is my first real phone and I want to debloat it and get AdAway and all of the other fun Android stuff to get the best experience. I still have a 1.5 year warranty and from what I read unlocking my bootloader will void that. Are there any methods/guides to root my phone, downgrade, root, then upgrade again, etc. without unlocking my bootloader? Thanks in advance!