Cryptic has stated the Klingon faction is not a full faction and that it's something they want to address in 2012, as it's generally seen as essential before launching a playable Romulan faction.
This keeps track of the changes to STO in a way that tracks the progress on closing the gap between the factions. The number of races is not considered as the Federation, by its nature, is composed of a wide assortment of aliens, and the Klingon, Romulan, Cardassian, etc. factions would all be heavily based around a few species.
Each time period is divided up into quarters (three month blocks) and is evaluated at the end of each said time.
|Q1||Q2||Q3||Q4||Q1||Q2||Q3||Q4||Q1||Q2||Q3||Q4||Q1||Q2 to Date (notes)|
|Tier 1 Starships||2||2||3||4||4||4||5||6||6|
|1||1||1||1||1||1||1||1||2||2||2||2 (none planned until levels 0-9 added in May)|
|Tier 2 Starships||3||3||3||3||3||6||6||6||6||6||6|
|3||3||3||3||3||3||3||3||3||3||3||3||3 (none planned until levels 10-19 added in May)|
|Tier 3 Starships||3||5||5||5||6||6||6||6||7|
|Tier 4 Starships||3||3||3||3||3||6||6||6||6||6||6|
|Tier 5 Starships||14||14||69|
 Personal Opinion on Achieving "Full Faction" Status
I believe the following would fully satisfy "mission accomplished" on a full Klingon faction, in regards to parity with the Federation:
- Allow creation of a Klingon character when new account created, starting at level 0. UPDATE: Coming May 21
- A new KDF tutorial mission as a genuine introduction to the game UPDATE: Coming May 21
- The tough part: approximately 20-30 KDF-exclusive episodes.
- Several more ships:
- Orion, Nausicaan, and Gorn versions of shuttles, as well as Tier 1 (Lieutenant) and Tier 2 (Lt. Commander) starships
- At least one more Klingon sector block to include areas south of Omega Leonis, including locations like Ty'Gokor as a new hub