In The Unicode Standard, Armenian script implementation is discussed in  Chapter 7 Europe-I.

The Armenian script was encoded in The Unicode Standard version 1.0. The script is encoded in the following blocks:

BlocksCharacter RangeAdded in Unicode VersionUnicode chart
Armenian 0530..058F 1.0  U0530.pdf
Alphabetic Presentation Forms FB13..FB17 1.1  UFB00.pdf

Subsequent to version 1.1, the following characters have been added to the Armenian script:

CharactersUnicode VersionDocumentation
058A 3.0  n1984w97.doc,  L2/99-047
058D..058E 7.0  WG2 N3923,  L2/10-373,  WG2 N3924, L2/10-354
058F 6.1  n3771.pdf,  L2/10-008

Documentation refers to  ISO Working Group and Unicode proposals

A number of proposals for its inclusion were submitted to the Unicode Technical Committee and WG2:

1996-12-15 ISO 10585 – Armenian alphabet coded character set for bibliographic information interchange — ISO 10585 ( L2/01-237)

1997-05-13 Response to feedback from US on Armenian N 1446-- Richard Youatt ( WG2 N1560.doc, (L2/97-084 — not online))

1997-07-03 Armenian ad hoc report — Suignard (WG2 N1616, L2/97-161 — not online)

1998-07-06 Application for Registration No.221, Armenian alphabet coded character set for bibliographic information interchange — NB Ireland (L2/98-244 — not online)

1998-12-16 Armenian Comments on SC 2 N 3134, Application for Registration No.221, Armenian alphabet coded character set for bibliographic information interchange — National Body of Armenia ( WG2 N1981,  L2/98-426)

1999-02-05 Encoding of the Armenian script in ISO 10646, answer to SC2 N3222 (L2/98-426) — Michel Suignard ( WG2 N1984 word doc,  L2/99-047)

1999-07-23 Comments on proposals for the Universal Multiple-Octed Coded Character Set — Dr. W. Röllig (xlat. Küster) ( L2/99-224)

2000-01-13 Communication from Armenia (SARM) — Levon H. Aslanyan ( L2/00-017)

2000-03-14 Armenian comments and 3 attachments AMST 34.001-99, 34.002-99, 10646-1 Armenian — L. H. Aslanyan ( WG2 N2190,  L2/00-090)

2000-12-21 Encoding Iranian Scripts in Unicode, Iranianist meeting report from Paris — Carl-Martin Bunz ( L2/01-007)

2010-02-05 Proposed additions to ISO/IEC 10646:2003 — INCITS/L2 ( WG2 N3810,  L2/10-068)

2010-02-10 Proposal to encode an Armenian Dram currency symbol — Karl Pentzlin ( WG2 N3771,  L2/10-008)

2010-09-24 Proposal to add an Armenian Eternity Sign (WG2 N3923) [withdrawn by author] — Karl Pentzlin ( WG2 N3923,  L2/10-373)

2010-09-24 Proposal to encode two symbols for Armenian in the UCS — Michael Everson ( WG2 N3924,  L2/10-354)

2017-01-19 Armenian Phonetic Characters in Unicode — Luc V. Baronian ( L2/17-032)

Recommendations to UTC #150 January 2017 on Script Proposals ( L2/17-037) (See point 1.)

UTC #150 Minutes ( L2/17-016) (See C.13 for decision and action items)