Insight-HXMT Data Release 7 (DR7) has been publicly released. DR7 contains all core and guest observations whose data proprietary periods are before June 31, 2021. DR7 includes 208 observations, and the object names are attached.

Insight-HXMT Data Release 6 (DR6) has been publicly released. DR6 contains all core and guest observations whose data proprietary periods are before March 31, 2021. DR6 includes 115 observations, and the object names are attached.

I am pleased to invite you to respond to the 4th “Announcement of Opportunity” by submitting proposals for observations to be performed with the Insight-HXMT satellite. The Insight-HXMT Cycle 4 guest observation program is open completely to the whole international scientific community.