Here is their layout for the testing schedule for phase 3 be mindful this will be subject to change. I wouldn't expect for the servers to stay online for a extended period roughly 3 weeks from today.
Test 1 - June 14, 2013 (Friday), 2:00 a.m. to June 16, 2013 (Sunday), 2:00 a.m. (PDT) / June 14, 2013 (Friday), 9:00 to June 16, 2013 (Sunday), 9:00 (GMT)
Large-scale checks of core PlayStation 3 functions
Operation of multiple data centers
Checks for stability in light of increased content
Checks for increased server load due to battle system revisions
In addition to the establishment of regional data centers and the above test objectives, the first phase 3 test will place emphasis on world stability and functionality on the PlayStation 3.
Critical issues reported by players will be addressed immediately, or by the start of the second phase 3 test at the latest.
Test 2 - Schedule TBA
Transfer of character data from Version 1.0
Once the PlayStation 3 version has been confirmed stable in the course of Test 1, we will move on to Test 2 which will include character data transfers and the addition of worlds from Version 1.0.
Test 3 - Schedule TBA
Test of the Duty Finder player matching system
If there are no major problems with the transfer of character data from Version 1.0, all subsequent tests will include the Duty Finder. Although limited in functionality, large scale stress tests of the matching system will be conducted.
Final Test - Schedule TBA
Once all key objectives for beta test phase 3 are complete, a final test of the game engine will be conducted to ensure server stability. During this test, worlds are scheduled to remain online for several days.
Final adjustments in preparation for release will be made during beta test phase 3, and your feedback will be invaluable as we conduct the tests outlined above.
Certain circumstances may necessitate the change of test objectives and scheduling. Should any schedule changes be necessary, an announcement will be made.
We thank you for your participation in the beta test, and hope you enjoy the experience!