A launch is expected in the second week of May and the pricing will probably be around the $80 mark. But don't expect to see wide distribution of this card, it's mainly intended for the Chinese market.
According to our sources, the GT 1030 is currently the only GT product to be added to GeForce 10 lineup (so no GT 1040 yet). What’s more, the GT 1030 will focus mainly on the Chinese market. The most recent rumors seem to indicate that we are looking at 512 CUDA cores and 30W TDP card. Price should be similar to RX 550. The GT 1030 is currently expected in the second week of May.