CLDR-17830 Clean up header, remove old material, flesh out a bit

docs/site/downloads/cldr-46.md

@@ -2,7 +2,8 @@
 
 | No. |    Date    | Rel. Note |  Data  |  Charts  | Spec |   Delta  | GitHub Tag | Delta DTD | CLDR JSON |
 |:---:|:----------:|:---------:|:------:|:--------:|:------------:|:---:|:----------:|:---------:|:---------:|
-|  46 | 2024-04-17 |    [v46](http://cldr.unicode.org/index/downloads/cldr-46)    | [CLDR46](http://unicode.org/Public/cldr/46/) | [Charts46](http://unicode.org/cldr/charts/dev) |    [LDML46](http://www.unicode.org/reports/tr35/proposed.html)    | [Δ46](https://unicode-org.atlassian.net/issues/?jql=project%20%3D%20CLDR%20AND%20status%20%3D%20Done%20AND%20resolution%20%3D%20Fixed%20AND%20fixVersion%20%3D%20%2246%22%20ORDER%20BY%20created%20ASC) | ~~[release-46](https://github.com/unicode-org/cldr/releases/tag/release-46)~~ |   [ΔDtd46](https://www.unicode.org/cldr/charts/dev/supplemental/dtd_deltas.html)  |   [46.0.0](https://github.com/unicode-org/cldr-json/releases/tag/46.0.0)  |
+|  46 | 2024-010-~~XX~~ |    ~~[v46]()~~   | ~~[CLDR46](http://unicode.org/Public/cldr/46/)~~ | [Charts46](http://unicode.org/cldr/charts/dev) |    [LDML46](http://www.unicode.org/reports/tr35/proposed.html)    | [Δ46](https://unicode-org.atlassian.net/issues/?jql=project+%3D+CLDR+AND+status+%3D+Done+AND+resolution+%3D+Fixed+AND+fixVersion+%3D+%2246%22+ORDER+BY+priority+DESC
+) | ~~[release-46]()~~ |   [ΔDtd46](https://www.unicode.org/cldr/charts/dev/supplemental/dtd_deltas.html)  |   ~~[46.0.0](https://github.com/unicode-org/cldr-json/releases/tag/46.0.0)~~  |
 
 ## Overview
 
@@ -17,18 +18,38 @@ CLDR data is used by all [major software systems](https://cldr.unicode.org/index
 
 ### DTD Changes 
 
+1. Added alt='official' to represent cases where an official value differs from the customary value. Currently added for a small number of language names, decimal separators, and grouping separators
 **TBD**
+2. Added new numbering systems from Unicode 16.0
 
 For a full listing, see [Delta DTDs](https://unicode.org/cldr/charts/46/supplemental/dtd_deltas.html).
 
 ### Supplemental Data Changes
 
+1. Currency. New currency code ZWG added — because it was late in the cycle, many locales will just support the code.
 **TBD**
+2. Timezones.
+    a. Changed Kazakhstan to reflect removal of Asia/Almaty
+	b. Deprecated timezone ids. Altered the handling of: CST6CDT, EST, EST5EDT, MST7MDT, PST8PDT
+3. Units
+    a. Added units: portion-per-1e9 (aka per-billion), night (for hotel stays), light (as a prefix for light-second, light-minute, etc.)
+	b. Changed preferred wind speed preference for some locales to 	meter-per-second
+4. Updated: language IDs, likelySubtags, region gdp and language populations, etc.
+   a. Minimization for likelySubtags removes some additional redundant mappings
+5. Transforms.
+   a. Major update to Han → Latn, reflecting new data in Unicode 16.0
+   b. Fixes for Arabic numbers, a Farsi vowel
 
 For a full listing, see [¤¤BCP47 Delta](https://unicode.org/cldr/charts/46/delta/bcp47.html) and [¤¤Supplemental Delta](https://unicode.org/cldr/charts/46/delta/supplemental-data.html)
 
 ### [Locale Changes](https://unicode.org/cldr/charts/46/delta/index.html)
 
+1. Major changes to emoji search keywords and short names
+    a. Data imported from WhatsApp
+	b. Increased the maximum number of search keywords
+	b. Revision of many search keywords to break up phrases
+2. Major changes to Chinese collation, reflecting new data in Unicode 16.0
+3. Other changes to various fields
 **TBD**
 
 For a full listing, see [Delta Data](https://unicode.org/cldr/charts/46/delta/index.html)