The Islanders' roster is nearing its finalization, which it needs to be by 5 pm Tuesday. Whether you like the 23-players chosen for the final product is another issue.
The movement started yesterday, after the team reassigned Mathew Barzal back to the WHL, and Kirill Petrov (among others) to Bridgeport. This article from the official site says Thomas Hickey was placed on IR, but the rest of the site doesn't mention it. Either way, the injured Hickey is out of sight for a while.
Today, they placed forward Louis Leblanc on waivers to send him to the Sound Tigers.