Between 2pm and 5pm eastern time, we will begin sending small batches of tax returns to the IRS for processing. You may begin to receive acknowledgements as early as this afternoon. If all goes well today, the IRS will ask for a greater number of returns in subsequent days throughout HUB testing.
HUB testing will continue the rest of this week, pause for the weekend, and resume Monday through Thursday next week leading up to the official start of e-file January 29th.