Season 7 Changes:

General Changes

Server is updated to 1.11.2 (from 1.8.9)
D-Mine now has more 'better' filler blocks (Less Stone.)
There is now a Crafting Table next to Conductor (You're welcome.)
Shanky Boy Quest now includes a new NPC.
Many Crate Rewards have been changed and/or updated
Public EXP Grinders should now spawn more Zombies
Chicken Jockeys can now be killed in Public EXP Grinders
P200 can now use colours on signs (Yes, it works this time.)
P200's Perk is now as follows: Ability to use /autopickup and /autoblocks toggle
P100's Mine is now much deeper
All Minerals can be purchased from All Server Shops again (Not just E.)
'Repair' Sign at E now costs $500,000, from $10,000
More Ender Chests have been placed around the prison
Apples in C-Shop now cost $500, from $200 (B and A remain unchanged, at $100.)
Cells can now be rented for 4 days (From 3.)
Donators can now only own 1 Cell (Temporarily, this will be reverted to 2 eventually.)
MasterMind-Solitarist can no longer use /horse (May come back, may not.)

Commissary Changes

Commissary Shop now works as follows:
-1000 Tickets for 1 Commissary Ticket
-10 Seconds of Time inside of the Commissary Shop
-Sell in stacks of 1 & 64
-Sell Multiplier is 2.5x

Old Commissary For Reference:
-1000 Tickets for 1 Commissary Ticket
-120 Seconds of Time inside of the Commissary Shop
-Sell in stacks of 1 & 2
-Sell Multiplier is 2.5x

Kat Note: Hopefully with the increased stack size and much shorter timer, people will not be in Commissary for too long to sell at a higher selling point. Note that this is subject to change at any time.

New Things Added

Shulker Boxes - Obtained by a New Quest
Mending Enchantment (Diamond Tools Only) - Purchasable for $2,500,000 at /warp XP
Prismarine Blocks - Obtained by... you find out. :)
Purpur Blocks - Obtained by... well, read the previous one.
Totems of Undying - Obtained through Events.
P150 Perk - Permanent Saturation.