We have already written about the Z490 chipset, which is basically an X470 with better features (with more PCIe tracks). The roadmap published by BlueChip suggests the launch of this chipset will take place next June, even before the B450 (the mid-range chipset for Pinnacle Ridge).
AMD’s Z490 and Intel’s Z390 chipset to arrive in the second half of the year
On the other hand, the Z390 chipset is also released by Bluechip, which confirms the Intel Coffee Lake 8-core processors for this year (June to be precise with engineering samples). These series (probably with more than one SKU) will be supported by the Z390 chipset, designed for high-end motherboards.
The slides also indicate that Threadripper would receive more of a platform upgrade than a new chipset. The second generation of Threadripper (based on Zen+) is currently expected in August, according to data provided by BlueChip.
If this is true, we would have a second half of the year with a lot of new high-end motherboards from the major manufacturers, ready for the new processors from both companies, in order to get the most out of it.
We can also see the B360 chipsets for Coffee Lake arriving in the second half of the year, while the B450 chipset is already showing up on the AMD side, both for the mid-range.