InfluxDB 1.1 has been released with significant performance improvements, including up to a 60% increase in query performance for first() and last() queries without GROUP BY, as well as substantial increases in write throughput and improved stability for sparse high cardinality data sets. The release also introduces new query capabilities such as linear interpolation, cumulative sums, support for regular expressions on field keys, and the ON clause for all SHOW commands. Additionally, the admin UI is deprecated and disabled by default, while upgrading from 1.0 to 1.1 requires no data migration but may require configuration changes prior to upgrade. The release highlights InfluxDB's commitment to iterating quickly based on community feedback.