As the 3850 is the eventual replacement to the 3750, the new Catalyst 3650 is the replacement to the 3560. Like the 3850, the 3560 supports netflow on all its ports, stateful failover when stacked, and can support up to 25 access points with appropriate licensing. The key differences between the 3650 and 3850 are:
3650 has fixed uplink ports 3650 supports stacking, but:
Stack throughput is 1/3 of the 3850 (160Gbps vs. 480Gbps for the 3850)
Stacking requires purchase of an additional module
3650 does not support StackPower Power supplies are not interchangeable between the 3650 and 3850
It should be said that the 3560 and 3750 will still remain exceptionally good options for the majority of customers; performance and features of these older switches are still well suited for most access layer switch deployments, and will be for many years to come.
Some of our most popular Used Cisco 3650 Catalyst Switches