In The Unicode Standard, Newa script implementation is discussed in  Chapter 13: South and Central Asia-II: Other Modern Scripts.

The Newa (formerly called Newar or Prachalit) script was encoded in The Unicode Standard version 9.0. The script is now encoded in the following block:

BlocksCharacter RangeAdded in Unicode VersionUnicode chart
Newa 11400..1147F 9.0  U11400.pdf

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

2009-09-28 Roadmapping the scripts of Nepal — Michael Everson ( WG2 N3692,  L2/09-325)

2011-05-03 Preliminary Proposal to Encode the Prachalit Nepal Script in ISO/IEC10646 — Anshuman Pandey ( WG2 N4038,  L2/11-152)

2012-02-29 Proposal to Encode the Newar Script in ISO/IEC 10646 — Anshuman Pandey ( WG2 N4184,  L2/12-003)

2012-02-05 Proposal for the Nepaalalipi script in the Universal Character Set for Inclusion in the Unicode Standard — Dev Dass Manandhar, Samir Karmacharya, Bishnu Chitrakar ( WG2 N4322,  L2/12-120)

2012-05-11 On the encoding of the "Nepaalalipi" / "Newar" script — Ken Whistler ( L2/12-200)

2012-07-21 Response to L2/12-200 On the encoding of the "Nepaalalipi" / "Newar" script — Dev Dass Manandhar ( L2/12-244)

2012-07-21 Ancillary materials on "breathy consonants" in "Nepaalalipi" — Dev Dass Manandhar ( L2/12-245)

2012-10-22 Letter in support of N4184 and encoding the Newar script in ISO/IEC 10646 — Iain Sinclair ( WG2 N4372,  L2/12-336)

2012-10-29 Proposal for the Nepaalalipi script in the UCS — Dev Dass Manandhar, Samir Karmacharya, Bishnu Chitrakar ( L2/12-349)

2012-10-08 Proposal to Encode Nepal Himalayish Scripts in ISO/IEC 10646 — Pat Hall ( WG2 N4347,  L2/12-365)

Review of Indic‐related documents and Recommendations to the UTC ( L2/12-378) (See point II.)

UTC #133 Minutes ( L2/12-343) (See D.10.1 for decision and action items)

2012-11-08 Comparison between Newar and Nepaalalipi proposals (L2/12-003 and L2/12-349) — Deborah Anderson ( L2/12-390)

2013-01-28 Nepaalalipi e-mail — Dev Dass Manandhar, Bishnu Chitrakar, Sameer Karmacharya ( L2/13-029)

2014-04-10 Proposal to Encode Nepaalalipi Script in ISO/IEC 10646 — Dev Dass Manandhar, Samir Karmacharya, Bishnu Chitrakar ( L2/14-086)

2014-09-23 Comparison between Newar and Nepaalalipi proposals — Deborah Anderson ( L2/14-220)

2014-10-06 Recommendations to UTC from Script Meeting in Nepal — Deborah Anderson ( L2/14-253)

2014-10-21 Response to the Recommendation for Nepalese Scripts in L2/14-253 — Anshuman Pandey ( WG2 N4602,  L2/14-258)

2014-10-24 Towards a Consensus Encoding of Newa — Ken Whistler ( L2/14-285)

2014-10-28 Rationale for Atomic Encoding of Murmured Resonants in Newa — Ken Whistler ( L2/14-281)

2014-10-28 Specimen Showing Representation of Murmured Consonants in the Newar Script — Anshuman Pandey ( WG2 N4552,  L2/14-290)

2016-12-23 Proposal to encode the SANDHI MARK for Newa — Srinidhi A, Sridatta A ( L2/16-383)

Recommendations to UTC #150 January 2017 on Script Proposals ( L2/17-037) (See point 9.)

UTC #150 Minutes ( L2/17-016) (See D.3.1 for decision and action items)

2017-04-08 Proposal to encode the NEWA LETTER VEDIC ANUSVARA — Srinidhi A, Sridatta A ( L2/17-093)

Recommendations to UTC #152 July-August 2017 on Script Proposals ( L2/17-255) (See point 14.)

UTC #152 Minutes ( L2/17-222) (See D.6.1 for decision and action items)

2017-04-19 Comments on L2/16-322 and L2/16-383, Sandhi marks for Bengali and Newa — Deborah Anderson ( L2/17-130)

Recommendations to UTC #151 May 2017 on Script Proposals ( L2/17-153) (See point 4.)

UTC #151 Minutes ( L2/17-103) (See D.3.3 for decision and action items)