Justice Point rewards announced

[Knytestorme]

I see... reading the entire post FTW. Lock yourself just before you hit 81, I guess? 80 to 85 is going to take as long as 70 - 80 did, so I guess however long it takes to level from 70 - 72 is how long it will take to hit 81. If someone wants to do the math on approximately how many instance runs that takes [without rested] and then multiply that by the values above to hit the cap.

ATM 80-81 is about 1.68m xp (or just over 79-80 requirement)....took my t9 geared paladin about 5 hours to go from 80-81 in Mt Hyjal with about 15% rested xp initially banked from 2 years of being level 80

I do agree though, hititng up starter zones like Hyjal and leveling till just before 81 to get some of the new gear and then locking xp and grinding LK heroics is a good option.

Save your 4k JP before cata, go buy 2 peices of JP gear right away (won't be useable until 85 but still), get to level 80.9 in Hyjal, lock xp, grind 4k JP in LK Heroics, buy JP gear, repeat until you have all JP gear you need then go back to Hyjal seems the best leveling flow atm based on this data

[EDIT]
At 16JP per boss it will take 250 bosses to hit the 4k cap (not counting the extra 23 for the daily). H LK instances have an average of ~5 bosses so looking at roughly 50 instances to cap yourself in JP each time you start from 0 balance