The US is sending another $1 billion in military aid to Ukraine. This tranch includes 18 more howitzers, 36,000 rounds of howitzer ammo, HIMARS ammo, two harpoon missiles systems, tactical vehicles, and a bunch of other goodies, plus $225 million in humanitarian aid.
https://www.cnn.com/2022/06/15/politics/biden-admin-ukraine-military-aid/index.html
I read elsewhere that the US is trying to source 152mm artillery rounds for Ukraine’s Soviet era artillery. They have plenty of rounds for the US supplied 155mm howitzers, and US suppliers are working triple shifts to crank out more, but the Ukrainians are running very low on 152mm. The US is trying to get NATO allies like Bulgaria who still use 152mm to start manufacturing more.
And I also read that there are conflicting views on the pace of heavy weapons flowing into Ukraine. Ukraine claims it’s not coming fast enough, but it’s also seeming to have trouble absorbing an integrating what is sent. One example is that they are clamoring for more MLRS and HIMARS systems, but the first crew is only completing training this week, so none of the systems supplied yet are in the field. No doubt they will need more of these systems soon, but they aren’t quite ready yet to use what has already been delivered or promised.