Index: sys/dev/bvm/bvm_console.c
===================================================================
--- sys/dev/bvm/bvm_console.c
+++ sys/dev/bvm/bvm_console.c
@@ -107,6 +107,8 @@
 cn_drvinit(void *unused)
 {
 	struct tty *tp;
+    
+	gone_in(13, "bvmconsole");
 
 	if (bvm_consdev.cn_pri != CN_DEAD) {
 		tp = tty_alloc(&bvm_ttydevsw, NULL);
Index: sys/dev/bvm/bvm_dbg.c
===================================================================
--- sys/dev/bvm/bvm_dbg.c
+++ sys/dev/bvm/bvm_dbg.c
@@ -61,6 +61,8 @@
 	disabled = 0;
 	resource_int_value("bvmdbg", 0, "disabled", &disabled);
 
+	gone_in(13, "bvmdebug");
+
 	if (!disabled) {
 		if (resource_int_value("bvmdbg", 0, "port", &port) == 0)
 			bvm_dbg_port = port;
Index: usr.sbin/bhyve/bhyve.8
===================================================================
--- usr.sbin/bhyve/bhyve.8
+++ usr.sbin/bhyve/bhyve.8
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd Jun 25, 2020
+.Dd December 8, 2020
 .Dt BHYVE 8
 .Os
 .Sh NAME
@@ -104,7 +104,8 @@
 .Fx
 kernels compiled with
 .Cd "device bvmconsole" .
-This option will be deprecated in a future version.
+This option is deprecated and will be gone in
+.Fx 13.0 .
 .It Fl c Op Ar setting ...
 Number of guest virtual CPUs
 and/or the CPU topology.
@@ -145,7 +146,8 @@
 .Cd "device bvmdebug" ,
 allow a remote kernel kgdb to be relayed to the guest kernel gdb stub
 via a local IPv4 address and this port.
-This option will be deprecated in a future version.
+This option is deprecated and will be gone in
+.Fx 13.0 .
 .It Fl G Ar port
 Start a debug server that uses the GDB protocol to export guest state to a
 debugger.
Index: usr.sbin/bhyve/bhyverun.c
===================================================================
--- usr.sbin/bhyve/bhyverun.c
+++ usr.sbin/bhyve/bhyverun.c
@@ -1124,6 +1124,7 @@
 			acpi = 1;
 			break;
 		case 'b':
+			warnx("-b flag is deprecated and will be gone in FreeBSD 13.0");
 			bvmcons = 1;
 			break;
 		case 'D':
@@ -1145,6 +1146,7 @@
 			memflags |= VM_MEM_F_INCORE;
 			break;
 		case 'g':
+			warnx("-g flag is deprecated and will be gone in FreeBSD 13.0");
 			dbg_port = atoi(optarg);
 			break;
 		case 'G':