[Huawei Mate 10  Guides, News, & Discussion] IProfessor:
So as some of you might know, Huawei has officially announced that EMUI 10 is going to rollout early/mid/late June, I've built a quick app which lists the latest EMUI 10 uploads of Huawei, I'm going to post them here so we could stalk on what Huawei's doing [ and to archive the urls for myself too ]

So here we go ( The date is the firm's zip package last modify date ) :

Base

v400939 - Tue, 28 Apr 2020 08:40:42 GMT - Approved 6/3/2020

v401347 - Tue, 28 Apr 2020 09:42:16 GMT - Approved 5/27/2020

v401831 - Tue, 28 Apr 2020 09:20:22 GMT - Approved 5/28/2020

v401881 - Wed, 29 Apr 2020 01:38:08 GMT - Approved 5/27/2020

v403298 - Wed, 06 May 2020 09:24:09 GMT

v403415 - Tue, 28 Apr 2020 09:05:51 GMT - Approved

v407123 - Thu, 07 May 2020 05:14:52 GMT - Japan Edition ( Approved 5/27/2020 )

v408025 - Fri, 15 May 2020 01:11:38 GMT

Europe CUST

v401401 - Wed, 29 Apr 2020 01:59:44 GMT - Approved 6/10/2020

v401407 - Wed, 29 Apr 2020 01:51:00 GMT - Approved 6/10/2020 - REMOVED

v401882 - Wed, 29 Apr 2020 06:32:33 GMT - Approved

v401883 - Wed, 29 Apr 2020 01:51:53 GMT - Approved

v402221 - Wed, 06 May 2020 03:53:58 GMT

v402485 - Wed, 06 May 2020 03:48:59 GMT

v421353 - Wed, 29 Apr 2020 01:51:00 GMT - BLA-L29-CUST 10.0.0.5(C432)

Europe Preload

v401402 - Wed, 29 Apr 2020 02:05:25 GMT - Approved 6/10/2020

v401470 - Wed, 29 Apr 2020 01:55:25 GMT - Approved 6/10/2020 - REMOVED

v402222 - Wed, 06 May 2020 03:57:22 GMT

v402490 - Wed, 06 May 2020 08:56:55 GMT

v421354 - Wed, 29 Apr 2020 01:55:25 GMT - BLA-L29-PRELOAD 10.0.0.3(C432R1)

France CUST

v400935 - Thu, 30 Apr 2020 01:10:45 GMT - Approved 6/10/2020

France Preload

v400936 - Thu, 30 Apr 2020 01:03:06 GMT - Approved 6/10/2020

Latin America CUST

v401348 - Wed, 29 Apr 2020 03:06:11 GMT - Approved

v401832 - Wed, 29 Apr 2020 02:59:26 GMT - Approved 6/6/2020

v402043 - Wed, 29 Apr 2020 03:01:12 GMT - Approved 6/6/2020

v402044 - Wed, 29 Apr 2020 03:03:16 GMT - Approved

v403299 - Wed, 06 May 2020 08:49:01 GMT

Latin America Preload

v401349 - Wed, 29 Apr 2020 03:04:34 GMT - Approved

v401833 - Wed, 29 Apr 2020 03:01:50 GMT - Approved 6/6/2020

v403300 - Wed, 06 May 2020 08:50:08 GMT

Israel CUST

v401463 - Thu, 30 Apr 2020 04:10:46 GMT - Approved 6/3/2020

Israel Preload

v401464 - Thu, 30 Apr 2020 01:07:06 GMT - Approved 6/3/2020

Porsche CUST

v401597 - Thu, 30 Apr 2020 01:49:49 GMT - Approved

v408690 - Thu, 30 Apr 2020 07:57:38 GMT

Porsche Preload

v401598 - Thu, 30 Apr 2020 01:55:16 GMT - Approved

Italy CUST

v402371 - Thu, 30 Apr 2020 07:41:33 GMT - Approved

Italy Preload

v402372 - Thu, 30 Apr 2020 08:43:51 GMT - Approved

AMENA CUST

v402527 - Wed, 29 Apr 2020 02:39:37 GMT - Approved 5/27/2020

v402529 - Wed, 29 Apr 2020 02:36:29 GMT - Approved 5/27/2020

AMENA Preload

v402528 - Wed, 29 Apr 2020 02:10:37 GMT - Approved 5/27/2020

Middle East CUST

v402774 - Wed, 29 Apr 2020 01:48:47 GMT - Approved 6/3/2020

v403907 - Wed, 29 Apr 2020 01:54:54 GMT - Approved 5/28/2020

v405068 - Tue, 12 May 2020 02:58:10 GMT - Approved 5/28/2020

Middle East Preload

v402775 - Wed, 29 Apr 2020 01:54:30 GMT - Approved 6/3/2020

v403908 - Wed, 29 Apr 2020 01:56:11 GMT - Approved 5/28/2020

Russia CUST

v403838 - Wed, 29 Apr 2020 02:09:07 GMT - Approved 5/28/2020

Russia Preload

v403839 - Wed, 29 Apr 2020 02:12:27 GMT - Approved 5/28/2020

Japan CUST

v407124 - Thu, 07 May 2020 04:03:36 GMT - Approved 5/27/2020

v409151 - Fri, 15 May 2020 10:14:02 GMT

Japan Preload

v407122 - Thu, 07 May 2020 04:10:32 GMT - Approved 5/27/2020

v409152 - Wed, 20 May 2020 03:04:56 GMT

Unknown CUST

v402663 - TIGO LA - Thu, 30 Apr 2020 09:48:28 GMT - Approved

v402717 - TELEFONICA LA - Thu, 30 Apr 2020 09:53:49 GMT

v402808 - VODACOM ZA - Wed, 06 May 2020 08:57:16 GMT - Approved 6/6/2020

v403416 - CLARO LA - Thu, 30 Apr 2020 10:00:10 GMT - Approved

v403672 - ALTICE ALL - Wed, 06 May 2020 08:04:27 GMT - Approved 6/10/2020

v403793 - OPTUS AU - Wed, 06 May 2020 08:16:02 GMT - Approved

Unknown Preload

v402664 - TIGO LA - Wed, 06 May 2020 08:51:24 GMT - Approved

v402718 - TELEFONICA LA - Wed, 06 May 2020 08:41:46 GMT

v402800 - VODACOM ZA - Wed, 06 May 2020 08:52:38 GMT - Approved 6/6/2020

v403417 - CLARO LA - Wed, 06 May 2020 08:47:38 GMT - Approved

v403673 - ALTICE ALL - Wed, 06 May 2020 08:07:02 GMT - Approved 6/10/2020

v403794 - OPTUS AU - Wed, 06 May 2020 08:55:34 GMT - Approved

Patch

v406838 - Wed, 13 May 2020 02:40:31 GMT

v407946 - Fri, 15 May 2020 15:35:00 GMT - Japan Edition

v413159 - Wed, 27 May 2020 07:41:45 GMT - Approved - patch02

Note: I don't advise you to try installing them :p

To check if a firm is approved for installation: http://instagramnumber.byethost31.com/huawei/