The RV250 is still not in sight
The new 'cheap chip' from ATI, the RV 250, is still not on the market. Rumor has it that there will even be an RV280. The RV250 should actually be presented at CeBit. But you haven't seen much of it.
There were some graphics card manufacturers who had data sheets for the RV250. There are several possible reasons for the delay. The new mainstream chip from ATI would certainly be of interest to many customers because of its support for DirectX 8.1. Since the Radeon 7500, a DX 7 chip, is still selling well, there is no reason for ATI to release the RV250. Perhaps ATI will only save the RV250 until the release of the R300, ATI's first DX 9 chip. But it could also be that ATI has recently concentrated more on the chipsets and rather 'neglected' the RV250. The other mainstream chip, called the RV280, is rumored to support AGP 8x. But this one, if it exists at all, will most likely not come before the RV250.