Research firm the X Business Group, based in Fremont, California, forecasts that colour X Window terminals will account for 35% – or 25,000 – of the 68,000 X-terminals it expects to be shipped this year, and that colour X-displays will be the battleground for competing X-terminal manufacturers during 1991. It sees NCR, Hewlett-Packard and IBM as being best prepared for the fight, each already having complete families of colour products. Network Computing Devices – the leading monochrome supplier – will focus its efforts on the monochrome market, the group says, while the early leader Visual Technology has yet to introduce a colour model. Presently there are around 23 companies manufacturing X-display stations, with a further 10 offering OEM versions. The X Business Group reckons that colour will be the stimulus for the first X-display station industry shake-out.