Atomic batch of counters in Cassandra 2.1

[Eugene Voytitsky]

As I understand, atomic batch for counters can't work correctly 
(atomically) prior to 2.1 because of counters implementation.
[Link: http://www.datastax.com/dev/blog/atomic-batches-in-cassandra-1-2]
Cassandra 2.1. reimplements the counters.

Will atomic batch of counters work as expected (atomically) in Cassandra 
2.1?

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Best regards,
Eugene Voytitsky