Today I've noticed, that the dates of Algorithm rounds have been changed at this page:
https://tco20.topcoder.com/competition-overview/algorithm/algorithm-rules
For example, previously Round 2A was scheduled for May 23, and Round 4 — for August 1.
Now, it looks like Rounds 2A and 2B will be held in July, 3A and 3B in August, and Round 4 on September 5.
Can someone from TCO organizers confirm this information?