Version numbering system
Version numbering is the assigning of unique version numbers to unique states of ETSI deliverables. Within a given version number category (major, technical and editorial), these numbers are assigned in increasing order and correspond to new developments in the deliverable. It applies to all ETSI deliverables as follows:
The Technical Body or Industry Specification Group is responsible for version numbering and shall ensure that the system is used in a consistent manner within the series of deliverables.
The first draft of a deliverable will be version 0.0.1.
When editorial changes have been made, then the subsequent drafts will increase the third number "x.x.1" of the version number, e.g. x.x.2, x.x.3, …, x.x.9, x.x.10, etc.
When technical changes have been made, then the subsequent drafts will increase the second number "x.1.x" of the version number, e.g. x.2.x., x.3.x, etc. In the case of both editorial and technical changes, then the subsequent drafts will increase both the second and third numbers "x.1.1" of the version number, e.g. x.2.2., x.3.3, etc.
The first final version of a document will be Version 1.1.1.
Subsequent final documents will increase the first number "1.x.x" of the version number (1.x.x, 2.x.x, etc.).
While the document is under review, subsequent draft versions will increase "x.1.1", e.g., 1.2.0, 1.3.0, etc.
When the revised document is deemed final, the version will increase by "1.x.x" over the version being revised, e.g. the draft 1.5.3 will become a final 2.1.1.
For your information, "OLD" regime deliverables (I-ETS, ETR, TBR, etc.) were revised using the following system, i.e. the edition number replaced the second figure (Technical) in the ETSI version numbering:
EXAMPLE: ETS 300 nnn Edition 2 became EN 300 nnn Version 1.2.1.
NOTE: "OLD" regime deliverables had only a single Edition number, e.g. 1, 2 or 3, etc.