[discrete]
= Version history

[cols="1,1,1,1,3",options="header"]
|===
| Date
| Version
| Branch
| Author
| Modifications

| 08 May 2022
| 1.0
| Official
| Natalia Portillo
| Initial version

| 18 May 2022
| 2.0d1
| Draft
| Natalia Portillo
| Update version.

Add stub for new deduplication table.

Add stub for new media type.

| 04 Sep 2022
| 2.0d2
| Draft
| Rebecca Wallander
| Add flux data definitions.

| 15 Sep 2022
| 2.0d3
| Draft
| Natalia Portillo
| Fix some typos.

Add index continuation block.

Add track layout block.

| 15 Sep 2022
| 2.0d4
| Draft
| Natalia Portillo
| Define deduplication table version 2.

Define twin sector table.

| 16 Sep 2022
| 2.0d5
| Draft
| Natalia Portillo
| Define snapshot block.

| 16 Sep 2022
| 2.0d6
| Draft
| Natalia Portillo
| Define parent block.

| 16 Sep 2022
| 2.0d7
| Draft
| Natalia Portillo
| Rework flux block to use deduplication tables.

| 16 Sep 2022
| 2.0d7
| Draft
| Natalia Portillo
| Define bitstream block.

Add annex explaining the meaning and relationship between user, bitstream and flux data.

| 5 October 2025
| 2.0df
| Draft
| Natalia Portillo
| Final draft.

Move specification to Asciidoc.

Deprecate Compact Disc lead-in, first track pregap, lead-out, and floppy disk lead-out data types. They are stored as user data now (with negative and overflow sectors as appropiate).

Clarify and correct deduplication table specification.

Rework index version 3 specification.

Clarify negative and overflow blocks in deduplication tables.

Clarify deduplication table size type.

Clarify deduplication table sector status.

Add encrypted and decrypted sector status.

Add Aaru Metadata JSON.
|===