Recently several exchanges have announced launch pad, where ICO are sold and listed in those exchanges almost immediately at a high price.
This have attracted many investors.
Yes, this is the new trend now, almost all major exchanges are planning to have IEO already.
Please while investing in the IEOs don't forget to investigate most of those exchanges because very soon scammers will soon take advantage of the IEO.
Of course, not because it is run by an exchange it will mean that it will be successful. There could be failures along the way so we also need to investigate and DYOR as a IEO investor.