Connect Home has a 2x2 AC1300 class Wi-Fi radio used to service both devices and node-to-node backhaul. Maximum link rates are spec'd at 400 Mbps and 866 Mbps for 2.4 and 5 GHz, respectively. It will be sold singly ($169.99) or as a three-pack ($379.99).
There's also a Connect Home Pro version with shared 4x4 AC2600 class radio, which bumps maximum link rates up to 800 Mbps and 1300 Mbps for 2.4 and 5 GHz. Samsung announced only single-unit pricing for the Pro at a pretty pricey $249.99.
The Pro will be the only mesh Wi-Fi product with a dual-band 4x4 radio servicing devices (and backhaul). NETGEAR's Orbi also uses a 4x4 radio, but it is 5 GHz only and used exclusively for backhaul between the router and satellite units.
Samsung says both Connect Home models can support networks of up to five nodes.
Not much was revealed technically about the product with no spec sheet available on the product page. But CNET's preview piece back in March, has both specs and a photo showing two Ethernet ports, presumably gigabit class.
The specs call out a quad-core processor @ 710 MHz (likely a Qualcomm IPQ4019), 512 MB of RAM and 1 GB of flash. Also called out is a Bluetooth 4.1 radio, which is pretty much standard in mesh designs for initial app-based setup. It's safe to assume the Samsung Connect app is Android-based, but the announcement has no mention of iOS support.
The company is going with a Best Buy exclusive rollout starting July 2. So don't expect any discounts off the MSRP's quoted above.