Trion Worlds just announced that they're extending the subscriber bonuses for Rift's Half-Birthday Event for an extra week! Here are the details from the community blog:

"We know many of you have been weathering out the storm on the east coast – so we’re keeping the subscriber bonuses turned on an extra week, you now have until September 6th to enjoy all the bonuses to XP, Guild XP, Favor, Prestige, Planarite, and dugeon & raid currencies. Have fun!"